Connectivity between the solar photosphere and chromosphere in a vortical structure. Observations of multi-phase, small-scale magnetic field amplification

TL;DR

This paper investigates the dynamic interaction between small-scale magnetic flux concentrations and vortical flows in the solar atmosphere, revealing the connection between photospheric vortices and chromospheric swirling motions through detailed observations and analysis.

Contribution

It provides a comprehensive description of the evolution of magnetic flux concentrations interacting with vortex flows and their associated chromospheric dynamics, including swirling motions and jets.

Findings

Identification of a chromospheric swirl linked to magnetic flux interaction.

Observation of an impulsive chromospheric jet associated with vortex activity.

Detailed temporal evolution of magnetic and chromospheric features in small-scale structures.

Abstract

High-resolution solar observations have revealed the existence of small-scale vortices, as seen in chromospheric intensity maps and velocity diagnostics. Frequently, these vortices have been observed near magnetic flux concentrations, indicating a link between swirls and the evolution of the small-scale magnetic fields. Vortices have also been studied with magneto-hydrodynamic (MHD) numerical simulations of the solar atmosphere, revealing their complexity, dynamics, and magnetic nature. In particular, it has been proposed that a rotating magnetic field structure driven by a photospheric vortex flow at its footprint produces the chromospheric swirling plasma motion. We present a complete and comprehensive description of the time evolution of a small-scale magnetic flux concentration interacting with the intergranular vortex flow and affected by processes of intensification and weakening of its magnetic field. In addition, we study the chromospheric dynamics associated with the interaction, including the analysis of a chromospheric swirl and an impulsive chromospheric jet.